The Overlooked Fasting Insulin Test: Early Detection for Heart Disease, Diabetes, Cancer, and Dementia

The podcast argues that a simple, inexpensive fasting insulin test is a superior predictor of chronic diseases like heart disease, diabetes, cancer, and dementia compared to standard annual checkup markers such as blood glucose, A1C, and triglycerides. It posits that mainstream medicine's singular focus on blood glucose leads to a 20-year delay in identifying metabolic dysfunction, resulting in late diagnoses and reactive "sick care" rather than proactive health prevention. The host highlights the staggering costs of current healthcare, citing $5.6 trillion spent in the US in 2025, and suggests that widespread insulin testing could significantly reduce this burden by addressing root causes earlier.

A crucial distinction is made between high blood glucose and high insulin. While high glucose is a problem, high insulin (hyperinsulinemia) is presented as a much larger, earlier, and more insidious issue. The body's mechanism of developing insulin resistance due to constant insulin spikes from modern diets (frequent meals, snacks, sugary drinks) is explained, leading to increased insulin production to maintain normal glucose levels. This "normal" glucose, often within conventional lab ranges, masks underlying metabolic damage for decades. The ideal fasting insulin range (2-5) is contrasted with the broad, misleading lab range (2.5-25), which fails to flag early warning signs for the majority of the population, with 70-80% of US adults having suboptimal levels.

The primary recommendation is for individuals to get a fasting insulin test, even if it means paying out-of-pocket ($25-35) or finding a metabolically-aware doctor, as many conventional physicians dismiss its value as "useless." The podcast implicitly advocates for lifestyle changes that lower insulin, such as intermittent fasting and low-carb diets, explaining how these approaches effectively address the hormonal lock on fat stores, unlike calorie-counting diets which often fail long-term. It also offers a more comprehensive panel and consultation for those seeking deeper insights into their metabolic health.

The broader implications extend to a re-evaluation of public health strategies and medical education. By understanding high insulin as a foundational cause, the podcast connects it to chronic inflammation, cardiovascular disease (via sodium retention, endothelial damage, and increased clotting), osteoarthritis, immune suppression leading to cancer, neurodegeneration in Alzheimer's (brain insulin resistance and amyloid plaque production), obesity, PCOS, and non-alcoholic fatty liver disease. This reframes these seemingly disparate conditions as manifestations of a common metabolic root, suggesting a paradigm shift from symptom management to root cause resolution that could prevent widespread suffering and significantly reduce healthcare expenditures.

There is one simple, very inexpensive test that can tell you more about your risk of heart disease, diabetes, cancer, and dementia than any other test.

The test I'm talking about is a fasting insulin test, and you can walk into a lab and pay out of pocket $25 to $35 to get it done.

If we gave everyone a fasting insulin test, if that became a standard, then we could easily cut that total bill, that 5.6 trillion, could probably cut it in half or even lower.

If you check the people over five, the ones who are not optimal, then 70 to 80% of them in the US are going to be above that.

Everything that gets overwhelmed, everything that gets too much of something is going to develop resistance.

High insulin is a much bigger problem. And yet mainstream medicine only looks at the blood glucose and they keep testing that.

Insulin is a much stronger risk factor for heart disease than cholesterol ever is. And cholesterol in itself is not a risk factor. It's the inflammation that damages the cholesterol that really turns cholesterol into a problem at all.

Cardiovascular disease, cancer, dementia, obesity, and osteoarthritis are caused by insulin, not by blood glucose.

Obese people often get blamed for being gluttonous or having poor character or no willpower, but it's a hormone that dictates your behavior.

Type two diabetes is really nothing more than late stage insulin resistance.

Glucose is such a useless marker to test for type 2 diabetes and for insulin resistance. you're missing the point. You're wasting 20 years where you could have done something about it.

Intermittent fasting and low carb diets actually work because they work on the real mechanism. They actually lower insulin.